Polyurethane sealant has become the preferred choice for numerous sealing scenarios due to its outstanding comprehensive performance. This series includes two types: single-component (ventilated curing, ready to use upon opening) and two-component (with flexible curing time, suitable for large-scale construction). It offers various flow properties such as non-sagging type and self-leveling type. Its core advantage lies in its extremely high elongation rate and elastic recovery ability, which can effectively absorb the reciprocating displacement of dynamic joints. It is particularly suitable for concrete expansion joints with significant thermal expansion and contraction, highway joints, airport runways, and steel structure connection parts. The product has high mechanical strength, good wear resistance, and outstanding cold resistance. Moreover, its price is relatively moderate among high-end sealants, offering excellent value for money. Whether it is for filling gaps in building doors and windows or waterproofing joints in bridges and tunnels, polyurethane sealant can provide long-lasting and reliable sealing protection. It is a wise choice that combines performance and economy.